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/*
 * Copyright 2020 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.gradle.api.internal.lambdas;

import org.gradle.api.Action;
import org.gradle.api.Transformer;
import org.gradle.api.specs.Spec;
import org.gradle.internal.Factory;

import java.io.Serializable;
import java.util.concurrent.Callable;
import java.util.function.BiFunction;
import java.util.function.Supplier;

/**
 * Provides a mechanism for creating Java lambdas that can be stored to the configuration cache.
 *
 * The methods on this class are meant to be statically imported.
 */
public class SerializableLambdas {

    public static  Spec spec(SerializableSpec spec) {
        return spec;
    }

    public static  Action action(SerializableAction action) {
        return action;
    }

    public static  Factory factory(SerializableFactory factory) {
        return factory;
    }

    public static  Transformer transformer(SerializableTransformer transformer) {
        return transformer;
    }

    public static  Callable callable(SerializableCallable callable) {
        return callable;
    }

    public static  BiFunction bifunction(SerializableBiFunction f) {
        return f;
    }

    public static  Supplier supplier(SerializableSupplier supplier) {
        return supplier;
    }

    /**
     * A {@link Serializable} version of {@link Spec}.
     */
    public interface SerializableSpec extends Spec, Serializable {
    }

    /**
     * A {@link Serializable} version of {@link Action}.
     */
    public interface SerializableAction extends Action, Serializable {
    }

    /**
     * A {@link Serializable} version of {@link Factory}.
     */
    public interface SerializableFactory extends Factory, Serializable {
    }

    /**
     * A {@link Serializable} version of {@link org.gradle.api.Transformer}.
     */
    public interface SerializableTransformer extends Transformer, Serializable {
    }

    /**
     * A {@link Serializable} version of {@link BiFunction}.
     */
    public interface SerializableBiFunction extends BiFunction, Serializable {
    }

    /**
     * A {@link Serializable} version of {@link Callable}.
     */
    public interface SerializableCallable extends Callable, Serializable {
    }

    /**
     * A {@link Serializable} version of {@link Supplier}.
     */
    public interface SerializableSupplier extends Supplier, Serializable {
    }

    private SerializableLambdas() {
    }
}